"The Imperial Porcelain Factory (Russian: Императорский Фарфоровый Завод, romanized: Imperatorskii Farforovyi Zavod), also known as the Imperial Porcelain Manufactory (abbreviated as IPM), is a producer of hand-painted ceramics in Saint Petersburg, Russia. It was established by Dmitry Ivanovich Vinogradov in 1744 and was supported by the Russian tsars since Empress Elizabeth. Many still refer to the factory by its well-known former name, the Lomonosov Porcelain Factory." - (en.wikipedia.org 30.01.2020)
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